Apple 7 watch with cellular
If my iPhone is turned off and I’m on cellular with my watch should I be able to text and receive texts from non-Apple phones
From the footnotes at the bottom of this web page:
https://support.apple.com/en-us/HT205547
1. To receive SMS, MMS, or push notifications from third-party apps on your cellular Apple Watch, your paired iPhone must be powered on and connected to Wi-Fi or cellular, but it doesn't need to be nearby. You also need to be signed in to iMessage on your iPhone.